Hi I am destroying my relationship by being far to jealous. Does anybody no any useful tips on how to overcome this?

Thank you

You've already taken the biggest, hardest step: admitting it. The second step is smaller but still difficult: finding out why. After that is taken care of, the solution will likely present itself.

From your username I assume you're female, forgive me if I'm wrong.

Jealousy stems from an insecurity, a fear. Are you afraid he'll leave you? If it's not that then is it worth the fear and fighting? If it is that why are you afraid? Has he given you any reason?

Watch what you say, and give your words or actions a lot of thought, before you get carried away. Why are you jealous? How old are you?

Sort out what is rational reasons that you are jealous like PROOF
From what is YOUR insecurities.

Then pick your battles.
The more you accuse and nag the more secretive a guy will get.

You need to separate what is YOU from what it is that he is doing to give you reason to be jealous. No guy wants to compete or deal with an insecure wild imagination.

I was jealous of my boyfriend's ex because I really truly believed she wanted him back. She called him to invite him out and never included me. When he went out with her, it broke us up, but he explained what his real relationship with her was. He assured me that he loved me and I believed him. I told all my friends about him cheating, and they gave me the past history of his ex, and it all made sense. So the bottom line, the more you trust your boyfriend, the less jealous you should become.